Duwan Environmental's QJB2.5/8-400/3-740S Anaerobic Pond Submersible MixersApplicable to aeration and anaerobic ponds in industrial and urban wastewater treatment plants, creating water flow within the pond for water recirculation and stages of nitrification, denitrification, and phosphorus removal.
The Mixed Blender Series features multi-pole motors and a direct-drive structure, offering low energy consumption and high efficiency. The impellers are precision-cast or stamp-formed, ensuring high accuracy, strong thrust, an aesthetically pleasing and smooth appearance, and a compact structure.
The low-speed impeller series products utilize harmonic drive reducers, featuring low power, low speed, large impeller diameter, and wide service area. The impellers are made of polyurethane material and aluminum alloy casting, offering high strength and excellent corrosion resistance. In addition to mixing, they also function in promoting flow and creating water currents.
The motor winding of the submersible mixerF-grade insulation, with IP68 protection rating. When used in the aeration system of a wastewater treatment plant, it significantly reduces system energy consumption and improves oxygenation levels, effectively preventing sedimentation. According to process requirements, the direct-coupled submersible mixer can be equipped with a flow diverter.
The Mixed Agitator Series Submersible Mixers are designed for various water treatment processes and industrial applications that require uniform mixing of solid-liquid or solid-liquid-gas three-phase media to maintain consistent reaction.
Submersible Mixers SeriesThe product features a multi-stage motor; the submersible mixer's motor winding isF-grade insulation, protection rating IP68.
1. Submersible mixer motor failure symptoms: Before disassembling the motor, we conducted an empty operation to identify the issue. As expected, the motor emitted abnormal noises and exhibited significant vibration; the submersible mixer produced a hissing sound at the motor shaft sleeve, as if a part was "out of sync"; the shaft extension temperature reached over 60 degrees Celsius within less than 2 minutes of empty operation, feeling almost too hot to handle.
2. Submersible mixer structure diagram: The following image is an assembly drawing of the bearing on the pump side of the impeller, featuring the SKF 6309 bearing model. The outer ring of the bearing is secured by retainer 5, the inner ring by sleeve 4. The submersible mixer is held in place with spring retainers 2 and 3; the skeleton seal 11, with dimensions of 55x80x8, is mounted between the retainer 5 and sleeve 4, sliding on the sleeve 4. The other end of the bearing is fixed by the shoulder of the ∮45 shaft section and the step of the bearing housing; the fit of the ∮55 shaft section with the bearing housing is H8/f7, equivalent to a sliding bearing. The helical gear 7 is firmly seated in the right end of the submersible mixer shaft 8 through interference fit; part 1 is the oil scraper, preventing oil from the gear box from entering the skeleton seal.
3. Submersible mixer disassembly and inspection: First, remove the oil skimmer rings 1, spring retainers 2 and 3; then remove the motor rear bearing cap, and pull the motor rotor shaft 8 out from the left side of the motor stator body 9; finally, sequentially remove the bearing 6, sleeve 4, retainer 5, and frame oil seal!
Jiangsu Du'an Environmental Protection QJB2.5/8-400/3-740S Submersible AgitatorSupply Range
Fully assembled submersible mixer main unit10-meter underwater cable
Guides, brackets, hoisting equipment, wire ropes, hand winches, etc.
Diving AgitatorMain Component Material:
Part Name | Material |
Server | Stainless Steel304 |
Propeller | Stainless Steel304 |
Enhancing Steel Wire Rope | Stainless Steel304 |
Guides, brackets, lifting devices | Stainless Steel304 |
Manual Hoist | Galvanized |
O-ring | Ding Qing-70 |
Mechanical Sealing | Tungsten CarbideSilicon Carbide |
Anaerobic Pond Submersible MixersTerms of Use
Submersible mixers operate normally under the following conditions:24/7 Continuous Operation
Ambient Temperature:No Chinese content provided.Low:-6 ℃，Please provide the Chinese content to be translated.Gao:40℃；
2. Environmental Humidity:Please provide the Chinese content to be translated.No content provided for translation.70%、Please provide the Chinese content to be translated.Please provide the Chinese content to be translated.50%；
The pH range of the medium: 6-9.
Medium density not exceeding 1150 kg/m³.
5. Diving depth not exceeding 20 meters; technical performance
Structural Design：All-Copper Coiled Submersible Motor NSK Bearings, Carbide Tungsten Mechanical Seals, Waterproof Sealing Cables
Service Life：Around 15 years, routine maintenance and upkeep are required continuously.
Installed the system：100x100 Square Tube, 304 Stainless Steel, with Lifting Equipment
Operation ModeContinuous Operation
